LLM WORLD

Kimi K2.8 Preview

Moonshot AI · · 57 days after Kimi K3

Verified

1 of 1 published values traced to a source1 primary source, 1 archived3 not researched yet

Why this status

Newly added. Sources are not archived and no value has been traced to one yet — run `npm run enrich`.

What these states mean · How records are judged · Has this record changed?

Rolled out in full across Kimi Code on September 11 under the unchanged model ID kimi-for-coding. Moonshot describes its performance as close to Kimi K3, with more efficient thinking than Kimi K2.7 Code, adjustable thinking effort, and a context window of up to 1M tokens on every membership tier. No weights were published.

reasoning

Details

ReleasedSeptember 11, 2026
stated in kimi.com

Kimi K2.8 Preview was released on September 11, 2026.

CompanyMoonshot AI
FamilyKimi
Lineageafter Kimi K2
EraAgentic systems
TypeLanguage model · LLM
ModalitiesNot recorded
CapabilitiesReasoning
WeightsProprietary
LicenceNot applicable — proprietary
Context windowNot researched
ParametersNot researched

Current information, elsewhere

This record is a historical one: every figure above is traced to a dated primary source. For what is true today — live pricing, current rankings, availability — these are better maintained than anything here could be.

Sources

Record status: verified · confidence 90/100 · 1 of 1 primary

Newly added. Sources are not archived and no value has been traced to one yet — run `npm run enrich`.

Primary means published by the organisation that made the model. Verified records require at least one.

Kimi family

  1. Kimi K2 July 11, 2025
  2. Kimi K3 July 16, 2026
  3. Kimi K2.8 Preview September 11, 2026

What changed from Kimi K2

Compared with the previous release in this series. A field appears only when both records state a value — where one does not, it is listed as uncomparable rather than dropped, because a gap in our research is not a finding about the model.

Not comparable: Context window (not researched on both releases); Parameters (not researched on both releases); Capabilities and modalities (not researched on both releases)

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